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The morphogenic protein CopD controls the spatio-temporal dynamics of PBP1a and PBP2b in Streptococcus pneumoniae

Cassandra Lenoir1, Anaïs Pelletier1, Sylvie Manuse1

  • 1Molecular Microbiology and Structural Biochemistry, UMR, Université de Lyon, CNRS , Lyon, France.

Mbio
|September 20, 2023
PubMed
Abstract

Insights

Researchers discovered CopD, a novel regulator impacting penicillin-binding proteins (PBPs) crucial for bacterial cell division. This finding may help resensitize antibiotic-resistant bacteria.

Area of Science:

  • Microbiology
  • Cell Biology
  • Biochemistry

Background:

  • Penicillin-binding proteins (PBPs) are vital for bacterial cell division and shape.
  • Streptococcus pneumoniae has class A and B PBPs essential for peptidoglycan synthesis and remodeling.
  • Existing regulators CozE and MacP control PBP1a and PBP2a, respectively.

Purpose of the Study:

  • To identify novel regulators of penicillin-binding proteins in Streptococcus pneumoniae.
  • To understand the spatial and temporal regulation of PBPs for maintaining pneumococcal cell shape.
  • To explore potential therapeutic targets for combating antibiotic resistance.

Main Methods:

  • Genetic analysis of Streptococcus pneumoniae.
  • Protein interaction studies.
  • Cell morphology assays.

Main Results:

  • A novel regulator, CopD, was identified.
  • CopD was found to regulate both PBP1a and PBP2b.
  • This regulation is crucial for pneumococcal cell division and morphogenesis.

Conclusions:

  • CopD is a novel regulator of PBP1a and PBP2b in Streptococcus pneumoniae.
  • Understanding CopD's function offers insights into bacterial cell division.
  • Characterizing CopD presents a potential strategy for resensitizing bacteria to beta-lactam antibiotics.
Keywords:
Streptococcus pneumoniaecell divisioncell morphogenesispenicillin-binding proteinspeptidoglycan

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